Hobie Cat 21's main features
Model
Hobie Cat 21
Version
SE
Hull type
Catamaran
Category
Double handed sport/beach catamaran
Sailboat builder
Sailboat designer
Country
United States
Construction
GRP (glass reinforced polyester):
Sandwich foam fiberglass vinylester
First built hull
1987
Last built hull
1990
Appendages
Centerboard : twin pivoting centerboards
Helm
Single tiller
Rudder
Twin semi-spade rudders
Unsinkable
No
Trailerable
Yes
Former French navigation category
6
Standard public price ex. VAT (indicative only)
Hobie Cat 21's main dimensions
Hull length
21’ 4”6.48 m
Waterline length
20’ 6”6.25 m
Beam (width)
10’3.05 m
Draft
3’ 1”0.94 m
Draft when appendages up
0’ 11”0.27 m
Light displacement (MLC)
639 lb290 kg
Hobie Cat 21's rig and sails
Upwind sail area
315 ft²29.26 m²
Downwind sail area
541 ft²50.28 m²
Mainsail area
229 ft²21.28 m²
Jib area
86 ft²7.98 m²
Asymmetric spinnaker area
312 ft²29 m²
I
iFore triangle height (from mast foot to fore stay top attachment)21’ 8”6.6 m
P
iMainsail hoist measurement (from tack to head)29’ 11”9.11 m
Rigging type
Sloop Marconi fractional
Mast configuration
Fore beam stepped mast
Rotating spars
Yes
Number of levels of spreaders
1
Spreaders angle
Swept-back (diamond)
Spars construction
Aluminum spars
Standing rigging
1x19 strand wire continuous
Hobie Cat 21's performances
Crew
2 / 3
Trapezes
2 set(s)
Upwind sail area to displacement
iThe ratio sail area to displacement is obtained by dividing the sail area by the boat's displaced volume to the power two-thirds.
The ratio sail area to displacement can be used to compare the relative sail plan of different sailboats no matter what their size.
Upwind: under 18 the ratio indicates a cruise oriented sailboat with limited performances especially in light wind, while over 25 it indicates a fast sailboat.719 ft²/T66.78 m²/T
Downwind sail area to displacement
iThe ratio sail area to displacement is obtained by dividing the sail area by the boat's displaced volume to the power two-thirds.
The ratio sail area to displacement can be used to compare the relative sail plan of different sailboats no matter what their size.1235 ft²/T114.76 m²/T
Displacement-length ratio (DLR)
iThe Displacement Length Ratio (DLR) is a figure that points out the boat's weight compared to its waterline length. The DLR is obtained by dividing the boat's displacement in tons by the cube of one one-hundredth of the waterline length (in feet).
The DLR can be used to compare the relative mass of different sailboats no matter what their length:
a DLR less than 180 is indicative of a really light sailboat (race boat made for planning), while a DLR greater than 300 is indicative of a heavy cruising sailboat.34
Hobie Cat 21's auxiliary engine
Engine(s)
Outboard engine
Engine(s) power
3 HP
Hobie Cat 21's accommodations and layout
Cockpit
No cockpit
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